Answer:
a
Step-by-step explanation:
6x-3 this ? I don’t how you want it but hope it’s this ?
(-27^ -4/3 = 1 / (-27)^4/3 = 1 / (-27^1/3)^4 = 1 / (-3)^4 = 1/ 81
Let the number be x.
First student increased the number by 23, therefore
⇒ x + 23
Second student decreased the number by 1, therefore
⇒ x - 1
The first student's result was 7 times greater than the result of the second student's, therefore
⇒ x + 23 = 7(x - 1)
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Solve for x:
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x + 23 = 7( x- 1)
x + 23 = 7x - 7
6x = 30
x = 5
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Answer: The number on the board is 5.
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